General:

Mexican engine and transmission production
ended July 1991 (the end of the 1991 model year, which included the
Mexican built Golf GL, GTI, GTI 16v, and some
Jetta GLs and Jetta Carats), which signaled the end of
those engine and transmission lines for Mexican production. Soon,
production of the all-new A3 Golf and Jetta would start here. German
production of the 8 valve counterflow engine continued
until October of 1991 (when German consumption of the A3 started,
which had an all-new crossflow 8 valve design). The ECOdiesel and GLI 16v
engines and transmissions were
made until July 1992 (the end of the 1992 model year), mainly
because those engines ere also used in other VW models.
Unfortunately, Volkswagen was headed into dark times, and the A3
Golf and Jetta would be delayed to our shores, not arriving in
significant numbers until 1994.